Income Taxes (Detail Textuals 1) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Oct. 31, 2018	Jul. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Corporate Taxes per the Tax Cuts and Jobs Acts (TCJA) [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				23.30%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount				$ (38,740)	$ 0	$ 0
Subsequent Event [Member]
Corporate Taxes per the Tax Cuts and Jobs Acts (TCJA) [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
TCJA Impact on Beginning Net DTL [Member]
Corporate Taxes per the Tax Cuts and Jobs Acts (TCJA) [Abstract]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	$ 700	$ (36,200)		$ (35,500)